Morteni, a settlement in Ludza District (Republic of Latvia). In the 19th and early 20th centuries, it was a village in Lyutsinsky Uyezd, Vitebsk Governorate. From 1918 to 1940, it was part of the Republic of Latvia, and from 1940 to 1991, it was part of the Latvian SSR. At the beginning of the 20th century, most of the inhabitants of Mortenī were Jews. Their main occupation was agriculture. In the 1920s, there were 9 Jewish families left in Morteni, and there was a synagogue.

At the end of the summer of 1941, 37 Jews were killed in Morteni.